I remember having a unified inbox, of sorts, in Windows 95. I don't remember the name of Win95's included email app (it was one of the ancestors of Outlook), b

I remember having a unified inbox, of sorts, in Windows 95. I don't remember the name of Win95's included email app (it was one of the ancestors of Outlook), but it supported plugins for various services, so in addition to my email from my ISP (SMTP/POP3), my inbox also contained Compuserve messages and faxes (not that I ever received many faxes).